statistics

Q- Two samples of sizes 8 and 10 are drawn from two normally distributed population having variance 20 and 36 respectively. Find the probability that the variance of the first sample is more than twice the variance of the second sample.

Let X be the average of a sample of size 25 independent normal random variables with mean 0 and variance 1. P[[X<c]=0.5 (a) Determine c such that (b) Now assume that the observations may not be normally distributed, but they still …

1.A sample of 25 bottles is taken from the production line at a local bottling plant. Assume that the fill amounts follow a normal distribution. The probability is 90% that the sample variance is less than what percent of the population …

Two samples of sizes 8 and 10 are drawn from two normally distributed populations having variances 21.8 and 36, respectively. Find the probability that the variance of the first sample is more than twice the variance of the second …

Two simple of sizes 8&10 are drawn from two normally distributed population having variance 20 and 36 respectively. Find the probality that the variance of the first sample is more than twice the variance of the second sample

Q- Two samples of sizes 8 and 10 are drawn from two normally distributed population having variance 20 and 36 respectively. Find the probability that the variance of the first sample is more than twice the variance of the second sample.

two sample of size 8 and 10 are drawn from two normally distributed populations having variances 20 and 36, respectively. find the probability that the variance of the first sample is more than twice the variance of the second sample.

You are interested in estimating the mean of a population. you plan to take a random sample from the population and use the samples mean as an estimate of population mean. Assuming that the population from which you select your sample …

In a certain population the heights of men are normally distributed with mean 168.75 and variance 42.25 those of women are normally distributed with mean 162.50 and variance 36 the probability that the mean height of a random sample …